Hydrocarbon-burner.



M. H. DUNN. HYDROCARBON BURNER. APPLIUATION FILED ooT.2s. 19,13.

Patented July 7, 1914N N @Ses UNITED sTATEs rTENT OFFICE.

MOSES E. DUNN, OF LOS ANGEIJBS, CALIFGRNIA.

HYDRQCABBCN-BURNER.

Specification of Letters Patent.

To all 'whom it 'may concern:

Be it known that I, Moses H. DUNN, a citizen of the United States,residing at Los Angeles, county ofLos Angeles, and State of California,have'vinvented certain new and useful Improvements in Hydrocarbon-Burners, of which the following is a specification.

This invention relates tov hydrocarbon burners.y

, My invention has forits objectsl the provision of a' simple, durable,andhighly eftlcient burner adapted to use crudeoil in connection withsteam or air under pressure and which, due to its improved constructlonand `the relationship of the nozzles of its steam or air and oil pipes,spra s the oil to a relatively great dlstance, -a Ording a superiordelivery and combustion without the accumulation of any hydrocarbondeposit at the `nozzle or mouth and thereby overcomes a defect inc1dentto burners of this general tice, that theimproved construction at themouth or nozzle of the inner tube, by its cooperation with the outertube,while chok ing the air under pressureor steam, permits theliberation. of the steam or airin such manner that'it commingles withthe oil and forms' the latter into a spray which is pro jectedwith,considerable force for a relatively great distance, and4 the burneris thcrebyadapted for use ,in connection with steam boilers and insuresthe flame reaching well up around 4the sides of the boiler and .evenlythrough the tubes or over the sur-- face and wallsof the furnace, as thecase may be. At the same time, the nozzle does not clg with hydrocarbondeposit. A

An embodiment of the invention adapted to carry out the foregoingobjects and results is set forth fully hereinafter, but it is to beunderstood that I do not limitmysclr to the'exact sizes and proportionsofthe parts nor tothe details of construction except where specified inthe claims.

In the accompanying drawings: Figure 1 1s a side elevation; Fig. 2, alongitudinal section; Fig. 3, a cross section on line 3 3, Flg. 2; andFig. 4, a detail perspective of 'the nozzle et the end of the innertube.

The air or steam tube 1 is 'provided with a Vnozzle or mouth 2 ofelongated form which 1s longer than the internal diameter f the sa1dtube The tube 1 is screwed at 3 into a union 4 which is adapted toreceive air or Patented July 7, `1914..

steam at 5 from any suitable pipe. The inner or oil tube (i'has screwthreads 7 engaged w1t-h the nut 8, the latter being screwed into theunion at 9. By this means theoll tube is subject toadjustment longi-4tudinally, to a limited extent, in relation to the tube 1. The tube 6 isof somewhat smaller diameter externally than the internal diameter ofthe tube 1, whereby the air or steam may pass along the tubes andbetween them on its way to the nozzle or mouth 2. The end of the tube 6is flared at 10 1n general conical or beveled form up to the narrowflattened and circular part -11 which fits the interior of the tube 1 ata distance inwardly from the nozzle 2. Usually in a small size of theburner where the internal diameter of the tube 1 is, say, threequartersof an inch and the internal diameter of the tube 6 is one-half of aninch, length of tube l would be about twelve to fifteen inches and thatof tube 6 approximately nine to twelve inches. burner, the distancebetween the nozzle 2 and nozzle of tube 6 may be as great as nineinches, more4 or less as, for instance, where the internal diameter ofthe tube 1 is one andv oneuarter inches and the internal diameter o thetube 6 is one-half inch, the length of the tube 1 may be thirty inchesand that of tube 6 about twenty-one to twenty-two inches. I have found,by .experiment, that these distances have a relationship tothe eiciencyof the burner, but

4in stating them, I do not limit myself, ex-

cept'where specified in the claims. Between the abovelimits, the longerthe outer tube 1,

the farther the nozzle end of inner tube 6 i should be from-the nozzle 2of outer tube, in

order that the oil and steamy may become thoroughly 'united so that onleaving the burner all will be consumed and transformed into heat.Grignating in the outer surface of the tube 6, grooves 12 extendlongitudinally of the .tube through the beveled or conical part 10 andthe) part 11, as at 13,

' an inner tubeof smaller external diameter' widening until they reachtheir greatest theform of a spray which is widely spread and projectedwith considerable velocit-y.

Having thus described myinvention, what I claim as new and desire tosecure by Letters Patent, is:- A

1. ln an oil burner, the combination With an outer tube having a nozzleorjmouth, yof

vthan the interior of -the outer tube and provided with a coned or-iared end whose largest part or base subetantially'its the inn teriorof the outer tube, said dared end being provided with external grooveswhich are Widest zit-their discharge end and taper or decrease in sizeinwardly until they submoese@ stanti'a-lly merge into the outer surfaceof the inner tube', said coned orxflared end being located inwardlyinrelation to the nozzle. of theouter tube.

2. lin an oil burner, the combination with an 'outer tube havung anozzle or mouth, of

an inner tubeof smaller external diameter than the interior of the'outer 'tube and provided With a coned or dared end having a cylindricalpari-at its largest diameter substantiallyfitting the interior of .Itheouter tube, `said dared end being provlded with external grooves 'whichare Widest at their discharge end and taper or decrease in size untilthey substantially. merge into the outer surface of the inner tube, 4theend of the inner tube having an internal ,bevel which pirovides arelatively sharp eircuiair end thereon.

ln testimony whereof, hereunto aibx my signature in presence of twoWitnesses@ MOSES H. DUNN.

Witneesesz' j g L. W. Geuren @nun SmN'rz.

